Electrophilic intramolecular twofold iodoarylation was developed from the reaction of diynes and diynyl diethers and amines with iodine monochloride under mild conditions, which produced bis(2H-hydronaphthalene and chromene) and 2H-quinoline bearing an alkenyl iodide moiety in good to excellent yields. These compounds underwent Pd-catalyzed cross-coupling reactions with arylboronic acid and indium tris(arylthiolate) to produce the functionalized styrene derivatives.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jo401922b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A twofold interpenetrated three-dimensional barium(II) metal-organic framework constructed from 2,2'-[terephthaloylbis(azanediyl)]diacetate: synthesis, structure, dihydrogen bonding and spectroscopic properties.
Acta Crystallogr C Struct Chem
January 2025
College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China.
A new twofold interpenetrated 3D metal-organic framework (MOF), namely, poly[[μ-aqua-diaqua{μ-2,2'-[terephthaloylbis(azanediyl)]diacetato}barium(II)] dihydrate], {[Ba(CHNO)(HO)]·2HO}, (I), has been assembled through a combination of the reaction of 2,2'-[terephthaloylbis(azanediyl)]diacetic acid (TPBA, HL) with barium hydroxide and crystallization at low temperature. In the crystal structure of (I), the nine-coordinated Ba ions are bridged by two μ-aqua ligands and two carboxylate μ-O atoms to form a 1D loop-like Ba-O chain, which, together with the other two coordinated water molecules and μ-carboxylate groups, produces a rod-like secondary building unit (SBU). The resultant 1D polynuclear SBUs are further extended into a 3D MOF via the terephthalamide moiety of the ligand as a spacer.
View Article and Find Full Text PDFDirect Synthesis of K-Region Functionalized Polycyclic Aromatic Hydrocarbons via Twofold Intramolecular C-H/C-H Arylation.
Org Lett
December 2024
Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China.
Functionalized polycyclic aromatic hydrocarbons (PAHs) are essential building blocks for the bottom-up fabrication of structurally uniform nanocarbons. Herein we report a simple and efficient synthetic method toward K-region hydroxy-functionalized PAHs via TEMPO-mediated twofold intramolecular C-H/C-H arylations of 1-biphenyl-2-yl-2-aryl-ethanone derivatives. This method achieves high yields and selectivity, synthesizing a variety of PAH frameworks, including pyrenes, chrysenes, benzo[]phenanthrenes, and benzo[]tetraphenes.
View Article and Find Full Text PDFCrystal structures of seven mixed-valence gold compounds of the form [( P)Au][Au ] ( = -butyl or isopropyl, = S or Se, and = Cl or Br).
Acta Crystallogr E Crystallogr Commun
September 2024
Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
During our studies of the oxidation of gold(I) complexes of tri-alkyl-phosphane chalcogenides, general formula PAu, ( = -butyl or isopropyl, = S or Se, = Cl or Br) with PhICl or elemental bromine, we have isolated a set of seven mixed-valence by-products, the bis-(tri-alkyl-phosphane chalcogenido)gold(I) tetra-halogenidoaurates(III) [( P)Au][Au ]. These corres-pond to the addition of one halogen atom per gold atom of the Au precursor. Com-pound , bis-(triiso-propyl-phosphane sulfide)-gold(I) tetra-chlorido-aur-ate(III), [Au(CHPS)][AuCl] or [( PrPS)Au][AuCl], crystallizes in space group 2/ with = 4; the gold(I) atoms of the two cations lie on twofold rotation axes, and the gold(III) atoms of the two anions lie on inversion centres.
View Article and Find Full Text PDFCarbon-sulfur bond elongation as the promoting reaction coordinate in the efficient sub-nanosecond intersystem crossing in thianaphthene derivatives.
Phys Chem Chem Phys
September 2024
Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA.
Thiophene derivatives have become integral to OLEDs, photovoltaics, and photodynamic therapy research. A deeper understanding of their excited state dynamics and electronic relaxation mechanisms is expected to provide important physical insights of direct relevance for these applications. In this study, thianaphthene (TN), 2-methylbenzothiophene (2MBT), and 3-methylbenzothiophene (3MBT) are investigated using femtosecond broadband transient absorption and steady-state spectroscopy techniques along with time-dependent density functional calculations in cyclohexane and acetonitrile.
View Article and Find Full Text PDFIntramolecular [π4s + π4s] photocycloaddition of carbon- and nitrogen-bridged [3](1,4)naphthalenophanes.
Photochem Photobiol Sci
August 2024
Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University, Tsushima-Naka 3-1-1, Kita-Ku, Okayama, 700-8350, Japan.
[3](1,4)Naphthalenophanes, bearing carbon-bridge chains (syn- and anti-NPs) and nitrogen-bridge chains (syn- and anti-ANPs), were synthesized, and their X-ray structures and photoreactions were investigated. The intramolecular separation distance between the naphthalene cores for ANPs was shorter than that for NPs, suggesting that intramolecular interactions between the naphthalene rings were more efficient for ANPs compared to NPs. Upon photoirradiation at 300 nm, anti-NP, syn-ANP and anti-ANP produced the corresponding intramolecular [π4s + π4s] cycloadducts, whereas syn-NP gave an unidentified complex product mixture.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!